Bug 984174
| Summary: | Rawhide-F20[ INFO: possible recursive locking detected ] nfsv4 | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Frank Murphy <frankly3d> |
| Component: | kernel | Assignee: | Jeff Layton <jlayton> |
| Status: | CLOSED DUPLICATE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | rawhide | CC: | gansalmon, itamar, jlayton, jonathan, kernel-maint, madhu.chinakonda, nfs-maint, steved |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2013-09-16 12:54:11 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
*** This bug has been marked as a duplicate of bug 984115 *** |
Description of problem: Recursive Locking possibly? Version-Release number of selected component (if applicable): 3.11.0-0.rc0.git3.1.fc20.x86_64 How reproducible: noticeable at bootups dmesg <snip> [ 213.518014] ============================================= [ 213.518014] [ INFO: possible recursive locking detected ] [ 213.518014] 3.11.0-0.rc0.git3.1.fc20.x86_64 #1 Not tainted [ 213.518014] --------------------------------------------- [ 213.518014] mount.nfs/1349 is trying to acquire lock: [ 213.518014] (&sn->pipefs_sb_lock){+.+.+.}, at: [<ffffffffa0044898>] rpc_get_sb_net+0xe8/0x200 [sunrpc] [ 213.518014] but task is already holding lock: [ 213.518014] (&sn->pipefs_sb_lock){+.+.+.}, at: [<ffffffffa0044898>] rpc_get_sb_net+0xe8/0x200 [sunrpc] [ 213.518014] other info that might help us debug this: [ 213.518014] Possible unsafe locking scenario: [ 213.518014] CPU0 [ 213.518014] ---- [ 213.518014] lock(&sn->pipefs_sb_lock); [ 213.518014] lock(&sn->pipefs_sb_lock); [ 213.518014] *** DEADLOCK *** [ 213.518014] May be due to missing lock nesting notation [ 213.518014] 1 lock held by mount.nfs/1349: [ 213.518014] #0: (&sn->pipefs_sb_lock){+.+.+.}, at: [<ffffffffa0044898>] rpc_get_sb_net+0xe8/0x200 [sunrpc] [ 213.518014] stack backtrace: [ 213.518014] CPU: 0 PID: 1349 Comm: mount.nfs Not tainted 3.11.0-0.rc0.git3.1.fc20.x86_64 #1 [ 213.518014] Hardware name: Dell Inc. Vostro 200/0CU409, BIOS 1.0.15 06/23/2008 [ 213.518014] ffff8800c39a26e0 ffff8800c39c7680 ffffffff8172a840 ffffffff825dcbc0 [ 213.518014] ffff8800c39c7740 ffffffff810eb70f ffff8800c39c76a0 ffffffff81021869 [ 213.518014] ffff8800c39c76c8 ffffffff00000000 00000000007543aa ffffffff8220a300 [ 213.518014] Call Trace: [ 213.518014] [<ffffffff8172a840>] dump_stack+0x54/0x74 [ 213.518014] [<ffffffff810eb70f>] __lock_acquire+0x1a1f/0x1b30 [ 213.518014] [<ffffffff81021869>] ? sched_clock+0x9/0x10 [ 213.518014] [<ffffffff810bb818>] ? sched_clock_cpu+0xa8/0x100 [ 213.518014] [<ffffffff810ec012>] lock_acquire+0xa2/0x1f0 [ 213.518014] [<ffffffffa0044898>] ? rpc_get_sb_net+0xe8/0x200 [sunrpc] [ 213.518014] [<ffffffff8172e037>] mutex_lock_nested+0x87/0x3e0 [ 213.518014] [<ffffffffa0044898>] ? rpc_get_sb_net+0xe8/0x200 [sunrpc] [ 213.518014] [<ffffffff810bb95f>] ? local_clock+0x5f/0x70 [ 213.518014] [<ffffffffa0044898>] ? rpc_get_sb_net+0xe8/0x200 [sunrpc] [ 213.518014] [<ffffffff810e6cef>] ? lock_release_holdtime.part.28+0xf/0x1a0 [ 213.518014] [<ffffffffa0044898>] rpc_get_sb_net+0xe8/0x200 [sunrpc] [ 213.518014] [<ffffffffa00447b5>] ? rpc_get_sb_net+0x5/0x200 [sunrpc] [ 213.518014] [<ffffffffa0024ec8>] ? rpc_net_ns+0xa8/0x1a0 [sunrpc] [ 213.518014] [<ffffffffa00718d1>] gss_create+0x131/0x240 [auth_rpcgss] [ 213.518014] [<ffffffffa00329ae>] rpcauth_create+0xae/0x120 [sunrpc] [ 213.518014] [<ffffffffa002675b>] rpc_new_client+0x28b/0x5c0 [sunrpc] [ 213.518014] [<ffffffff81197959>] ? kstrdup+0x49/0x60 [ 213.518014] [<ffffffffa0027d0c>] rpc_create+0xcc/0x260 [sunrpc] [ 213.518014] [<ffffffff810217f5>] ? native_sched_clock+0x15/0x80 [ 213.518014] [<ffffffff81021869>] ? sched_clock+0x9/0x10 [ 213.518014] [<ffffffff810bb68d>] ? sched_clock_local+0x1d/0x80 [ 213.518014] [<ffffffff810217f5>] ? native_sched_clock+0x15/0x80 [ 213.518014] [<ffffffffa03ae46e>] nfs_create_rpc_client+0xbe/0x100 [nfs] [ 213.518014] [<ffffffffa0400e60>] nfs4_init_client+0xa0/0x360 [nfsv4] [ 213.518014] [<ffffffff81021869>] ? sched_clock+0x9/0x10 [ 213.518014] [<ffffffff810bb68d>] ? sched_clock_local+0x1d/0x80 [ 213.518014] [<ffffffff810bb818>] ? sched_clock_cpu+0xa8/0x100 [ 213.518014] [<ffffffff810e611d>] ? trace_hardirqs_off+0xd/0x10 [ 213.518014] [<ffffffff810bb95f>] ? local_clock+0x5f/0x70 [ 213.518014] [<ffffffff810e6cef>] ? lock_release_holdtime.part.28+0xf/0x1a0 [ 213.518014] [<ffffffffa03b0f96>] nfs_get_client+0x486/0x640 [nfs] [ 213.518014] [<ffffffffa03b0c50>] ? nfs_get_client+0x140/0x640 [nfs] [ 213.518014] [<ffffffffa04006aa>] nfs4_set_client+0x8a/0x110 [nfsv4] [ 213.518014] [<ffffffffa0402244>] nfs4_create_server+0xc4/0x310 [nfsv4] [ 213.518014] [<ffffffffa03f7a0e>] nfs4_remote_mount+0x2e/0x60 [nfsv4] [ 213.518014] [<ffffffff811f6c99>] mount_fs+0x39/0x1b0 [ 213.518014] [<ffffffff8119d100>] ? __alloc_percpu+0x10/0x20 [ 213.518014] [<ffffffff812148d3>] vfs_kern_mount+0x63/0xf0 [ 213.518014] [<ffffffffa03f78e6>] nfs_do_root_mount+0x86/0xc0 [nfsv4] [ 213.518014] [<ffffffffa03f7cea>] nfs4_try_mount+0x4a/0xd0 [nfsv4] [ 213.518014] [<ffffffffa03b1d07>] ? get_nfs_version+0x27/0x80 [nfs] [ 213.518014] [<ffffffffa03bcafd>] nfs_fs_mount+0x3dd/0xd00 [nfs] [ 213.518014] [<ffffffffa03bdb80>] ? nfs_clone_super+0x140/0x140 [nfs] [ 213.518014] [<ffffffffa03bb350>] ? param_set_portnr+0x60/0x60 [nfs] [ 213.518014] [<ffffffff811f6c99>] mount_fs+0x39/0x1b0 [ 213.518014] [<ffffffff8119d100>] ? __alloc_percpu+0x10/0x20 [ 213.518014] [<ffffffff812148d3>] vfs_kern_mount+0x63/0xf0 [ 213.518014] [<ffffffff8121719e>] do_mount+0x23e/0xa20 [ 213.518014] [<ffffffff81217a03>] SyS_mount+0x83/0xc0 [ 213.518014] [<ffffffff8173d9d9>] system_call_fastpath+0x16/0x1b [ 213.773243] NFSD: starting 90-second grace period (net ffffffff81d06580) [ 328.856178] fuse init (API version 7.22) [ 329.057207] SELinux: initialized (dev fuse, type fuse), uses genfs_contexts [ 329.120535] SELinux: initialized (dev fusectl, type fusectl), uses genfs_contexts [ 362.207058] INFO: task mount.nfs:1349 blocked for more than 120 seconds. [ 362.207065] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 362.207069] mount.nfs D ffff8800c5980000 4048 1349 1 0x00000084 [ 362.207077] ffff8800c39c7798 0000000000000046 00000000001d5300 ffff8800c39c7fd8 [ 362.207083] ffff8800c39c7fd8 00000000001d5300 ffff8800c39a26e0 ffff88010ed26490 [ 362.207089] 0000000000000246 ffff8800c39a26e0 ffff88010ed26488 ffff880123364ef0 [ 362.207094] Call Trace: [ 362.207106] [<ffffffff81732329>] schedule_preempt_disabled+0x39/0x90 [ 362.207110] [<ffffffff8172e155>] mutex_lock_nested+0x1a5/0x3e0 [ 362.207147] [<ffffffffa0044898>] ? rpc_get_sb_net+0xe8/0x200 [sunrpc] [ 362.207165] [<ffffffffa0044898>] ? rpc_get_sb_net+0xe8/0x200 [sunrpc] [ 362.207184] [<ffffffffa0044898>] rpc_get_sb_net+0xe8/0x200 [sunrpc] [ 362.207202] [<ffffffffa00447b5>] ? rpc_get_sb_net+0x5/0x200 [sunrpc] [ 362.207216] [<ffffffffa0024ec8>] ? rpc_net_ns+0xa8/0x1a0 [sunrpc] [ 362.207225] [<ffffffffa00718d1>] gss_create+0x131/0x240 [auth_rpcgss] [ 362.207243] [<ffffffffa00329ae>] rpcauth_create+0xae/0x120 [sunrpc] [ 362.207257] [<ffffffffa002675b>] rpc_new_client+0x28b/0x5c0 [sunrpc] [ 362.207263] [<ffffffff81197959>] ? kstrdup+0x49/0x60 [ 362.207278] [<ffffffffa0027d0c>] rpc_create+0xcc/0x260 [sunrpc] [ 362.207283] [<ffffffff810217f5>] ? native_sched_clock+0x15/0x80 [ 362.207288] [<ffffffff81021869>] ? sched_clock+0x9/0x10 [ 362.207294] [<ffffffff810bb68d>] ? sched_clock_local+0x1d/0x80 [ 362.207298] [<ffffffff810217f5>] ? native_sched_clock+0x15/0x80 [ 362.207309] [<ffffffffa03ae46e>] nfs_create_rpc_client+0xbe/0x100 [nfs] [ 362.207329] [<ffffffffa0400e60>] nfs4_init_client+0xa0/0x360 [nfsv4] [ 362.207333] [<ffffffff81021869>] ? sched_clock+0x9/0x10 [ 362.207338] [<ffffffff810bb68d>] ? sched_clock_local+0x1d/0x80 [ 362.207343] [<ffffffff810bb818>] ? sched_clock_cpu+0xa8/0x100 [ 362.207348] [<ffffffff810e611d>] ? trace_hardirqs_off+0xd/0x10 [ 362.207352] [<ffffffff810bb95f>] ? local_clock+0x5f/0x70 [ 362.207357] [<ffffffff810e6cef>] ? lock_release_holdtime.part.28+0xf/0x1a0 [ 362.207367] [<ffffffffa03b0f96>] nfs_get_client+0x486/0x640 [nfs] [ 362.207375] [<ffffffffa03b0c50>] ? nfs_get_client+0x140/0x640 [nfs] [ 362.207390] [<ffffffffa04006aa>] nfs4_set_client+0x8a/0x110 [nfsv4] [ 362.207405] [<ffffffffa0402244>] nfs4_create_server+0xc4/0x310 [nfsv4] [ 362.207418] [<ffffffffa03f7a0e>] nfs4_remote_mount+0x2e/0x60 [nfsv4] [ 362.207424] [<ffffffff811f6c99>] mount_fs+0x39/0x1b0 [ 362.207429] [<ffffffff8119d100>] ? __alloc_percpu+0x10/0x20 [ 362.207434] [<ffffffff812148d3>] vfs_kern_mount+0x63/0xf0 [ 362.207447] [<ffffffffa03f78e6>] nfs_do_root_mount+0x86/0xc0 [nfsv4] [ 362.207461] [<ffffffffa03f7cea>] nfs4_try_mount+0x4a/0xd0 [nfsv4] [ 362.207470] [<ffffffffa03b1d07>] ? get_nfs_version+0x27/0x80 [nfs] [ 362.207481] [<ffffffffa03bcafd>] nfs_fs_mount+0x3dd/0xd00 [nfs] [ 362.207492] [<ffffffffa03bdb80>] ? nfs_clone_super+0x140/0x140 [nfs] [ 362.207502] [<ffffffffa03bb350>] ? param_set_portnr+0x60/0x60 [nfs] [ 362.207507] [<ffffffff811f6c99>] mount_fs+0x39/0x1b0 [ 362.207511] [<ffffffff8119d100>] ? __alloc_percpu+0x10/0x20 [ 362.207515] [<ffffffff812148d3>] vfs_kern_mount+0x63/0xf0 [ 362.207520] [<ffffffff8121719e>] do_mount+0x23e/0xa20 [ 362.207524] [<ffffffff81217a03>] SyS_mount+0x83/0xc0 [ 362.207530] [<ffffffff8173d9d9>] system_call_fastpath+0x16/0x1b [ 362.207532] INFO: lockdep is turned off.